Marble 1.4 brings some gradual improvements to the existing features. It is available in extras-devel now. Please report problems/success here.

• Support for OSRM, MapQuest routing backends
• The voice navigation mode now also supports routes retrieved from OpenRouteService
• Much more voice navigation speakers to choose from, installed automatically as needed. Note that there's no progress report in the N900 version when selecting a remote speaker, please just give it some time to download the file (they are between 0.5 and 5 MB each). Afterwards the speaker is available offline of course.
• Support for additional turn types (used by MapQuest, e.g. merging or exiting a highway/motorway), more voice commands (like GPS connection lost)

Additionally we have

• Kinetic spinning can be switched on/off (in the main menu). Some people strongly voted to keep it, some hate it. After all we had an odd number of main menu entries, so I went for the pragmatic solution to add a "Kinetic scrolling" toggle button to the main menu. I'm sure the remaining core Maemo users don't mind that UI clutter too much :-)
• Bookmarks are also shown in the map now

Last but not least I uploaded a "new" version of monav-routing-daemon whose only purpose is to kick out the incompatible version 0.3.release-3+hg5585bb4a8d77. That worked fine, so you don't have to do any manual work anymore to get rid of that version previously found in extras-devel; just upgrade to the version the package manager offers after the next sync.

@niqbal: Voice navigation works fine here, do you still have problems with it?

@acrux: There seems to be some problem with osmarender indeed, I'll look into it.